Permanent magnet rotor and method and apparatus for making same

Details Permanent magnet rotor and method and apparatus for making same Permanent magnet rotor and method and apparatus for making same

1993-02-16

1994-09-06

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40R, H02K 2112

Patent

active

053451295

ABSTRACT:
A permanent magnet rotor includes a core and a plurality of magnetizable elements adhesively secured to the outer surface of the core. The core and adhered magnetizable elements are cold-pressed into a deep drawn cup-shaped outer metallic shell having a substantially closed end wall and an opposite open end defined by a peripheral edge which is rolled over the periphery of an end plate to encapsulate the core and magnetizable elements within the shell with an insulator disk disposed between each end of the core and the adjacent shell end wall and end plate. A method and apparatus for cold pressing the core and magnetizable elements into the cup-shaped shell and forming the peripheral edge of the shell over the end plate to effect encapsulation are also disclosed.

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